code: def test_ufunc_hash(self, func, nin, nout, identity):
      jnp_fun = jnp.frompyfunc(
          func, nin=nin, nout=nout, identity=identity
      )
      jnp_fun_2 = jnp.frompyfunc(
          func, nin=nin, nout=nout, identity=identity
      )
      self.assertEqual(jnp_fun, jnp_fun_2)
      self.assertEqual(hash(jnp_fun), hash(jnp_fun_2))
  
      other_fun = jnp.frompyfunc(jnp.add, nin=2, nout=1, identity=0)
      self.assertNotEqual(jnp_fun, other_fun)
  
imports: from functools import partial
  from absl.testing import absltest
  import numpy
  import jax
  import jax.numpy
  from jax._src import test_util
  from jax._src.numpy.ufunc_api import get_if_single_primitive
  from jax import config
label_desc: Use image node_id 3 for calling the LaxNumpyUfuncTests obj's underlying member method code with example usage: obj.test_ufunc_hash(func, nin, nout, identity) without return types